Examples of using The crontab in English and their translations into Japanese
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Colloquial
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Ecclesiastic
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Computer
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Programming
Using the crontab program on Unix.
Environment variables can be set in the crontab.
Open the crontab file running this:.
Add the following line to the crontab file.
Use the crontab editor to create or edit a user crontab. .
People also translate
Crontab-eThis will open the crontab file and let you edit it.
For automated cert renewal, add the following to the crontab:.
This uses the same formatting as the crontab command schedule format used in UNIX operating systems.
This macro replaces the first five fields of an entry in the crontab.
Each entry into the crontab file will consist of the following six fields separated by a space.
How to use crontab Below is the crontab format.
When the changes to the crontab are saved,the crontab is stored according to username and written to the file/var/spool/cron/username.
All these details are documented in the crontab(5) man page.
Users other than root can configure cron tasks with the crontab utility.
The crontab command conforms to IEEE Std 1003.2("POSIX.2") with the exception that the dangerous variant of calling crontab without a file name in the first form of the command is not allowed by this implementation.
HOME, PATH and SHELL may be overridden by settings in the crontab; LOGNAME may not.
Command output is mailed to the crontab owner(BSD can't do this), can be mailed to a person other than the crontab owner(SysV can't do this), or the feature can be turned off and no mail will be sent at all(SysV can't do this either).
SHELL is set to/bin/sh,and LOGNAME and HOME are set from the/etc/passwd line of the crontab's owner.
The cron key is specified using POSIX crontab syntax,see the crontab man page for cron syntax basics.
Each user has their own crontab, and commands in any given crontab will be executed as the user who owns the crontab.
If this option is not given, crontab examines"your" crontab, i.e., the crontab of the person executing the command.
Note in particular that if you want a PATH other than"/usr/bin:/bin",you will need to set it in the crontab file.
If this option is not given, crontab examines"your" crontab, i.e., the crontab of the person executing the command.
Although cron requires that eachentry in a crontab end in a newline character, neither the crontab command nor the cron daemon will detect this error.
In other words, if the job had run within one hour before the GMT offsetchange(and cron was not restarted nor the crontab(5) changed after that) or would run after the change at the next hour.
Those people are in luck, as every task can be scheduled on a daily, weekly, or monthly basis- or even further apart, in some cases,and specific instructions can be given to the server within the Crontab utility on how to perform the task, how to know when it's complete, and what to do when the task at hand has actually been finished.